I have printed a Code 128 barcode but my scanner doesn't read or scan itThis can have several reasons:
Using a Code 128 barcode font in Excel, Google Sheets
When using a Code 128 barcode font in office applications like Word or Excel, you can't just simply select your numbers and change the font. Instead, you will have to format your data by adding start and stop symbols and a check digit. Usually a macro, add-in, or stand-alone app will be supplied with the font that converts your data for the font and calculates a check digit.
Accordingly, the "Libre" barcode font for Code 128 also requires a separate encoder to create a valid barcode symbol with start/stop characters and check digit; as such it is not practical to use the "Libre" font in Excel. It is also not clear if the font includes the required FNC1 character that is needed to encode Code 128 GS1.
Code 128 sample barcodeUse the following verified sample barcode to test the settings of your scanner. It encodes nine characters, has the required start/stop symbols, the proper checksum, and sufficient quality.
Right-click and "Save as..." to print the barcode out. A good CCD scanner or reader app will also be able to scan the code directly from the screen.
For more sample 128 barcodes and a general introduction to Code 128, see our page Code 128 explained.
Creating Code 128 in Adobe Illustrator, InDesign
Use the Softmatic Barcode Extension to generate compliant Code 128 and Code 128 GS1 directly in your Illustrator or InDesign document:
The Softmatic Barcode Extensions for InDesign and Illustrator are available on the Adobe Exchange (requires 2021 versions or newer).
Creating compliant Code 128 barcodes on Mac / WindowsFor the creation of compliant Code 128 symbols like the one above, use Softmatic BarcodePlus V5. This stand-alone app creates all common retail barcodes, like EAN, UPC or ISBN. In addition BarcodePlus V5 supports a wide variety barcodes for warehousing, pharmaceuticals and 2D symbologies like QR, Aztec or PDF417.
This software is very easy to use. Simply select "Code 128", enter your data and the code is created right away. Video shows creation of a 128 GS1 code:
Bulk creation of Code 128For bulk creation of standards-compliant Code 128 and many other linear and 2D symbologies, see Softmatic BarcodeFactory V5:
Code 128 REST APIs